20.500.12556/DiRROS-15825 Leaching and geochemical modelling of an electric arc furnace (EAF) and ladle slag heap Old metallurgical dumps across Europe represent a loss of valuable land and a potential threat to the environment, especially to groundwater (GW). The Javornik electric arc furnace (EAF) and ladle slag heap, situated in Slovenia, was investigated in this study. The environmental impact of the slag heap was evaluated by combining leaching characterization tests of landfill samples and geochemical modelling. It was shown that throughout the landfill the same minerals and sorptive phases control the leaching of elements of potential concern, despite variations in chemical composi- tion. Although carbonation of the disposed steel slags occurred (molar ratio CO3/(Ca+Mg) = 0.53) relative to fresh slag, it had a limited effect on the leaching behaviour of elements of potential concern. The leaching from the slag heaps had also a limited effect on the quality of the GW. A site-specific case, however, was that leachates from the slag heap were strongly diluted, since a rapid flow of GW fed from the nearby Sava River was observed in the landfill area. The sampling and testing approach applied provides a basis for assessing the long-term impact of release and is a good starting point for evaluating future management options, including beneficial uses for this type of slag. EAF slag field verification geochemical modelling ladle slag leaching release prediction steel slag heap EAF žlindra geokemijsko modeliranje toplotna stabilnost ponovčna žlindra izluževanje napovedovanje izpustov odlagališče jeklarske žlindre true false true MDPI Angleški jezik Slovenski jezik © 2022 by the authors. Licensee MDPI, Basel, Switzerland Neznano 2022-11-22 11:12:16 2023-04-28 09:20:49 2023-04-29 03:36:37 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Opis vira z dne 6. 1. 2022; Članek št. 10; str. 1-21 iss. 1 Vol. 10 Jan. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-01-01 620.1/.2 2305-6304 10.3390/toxics10010010 92336899 https://www.mdpi.com/2305-6304/10/1/10 1 c350b7f4-6a45-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20933 RAZ_Loncnar_Mojca_2022.pdf RAZ_Loncnar_Mojca_2022.pdf 1 C91A917E6E369D2D94E36303206E6C82 95147f72eaae3e0a75ff27375a5b680b021ba1d49a086138147ab2fee356069a 45f682c1-81f4-11ed-a484-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21171 Zavod za gradbeništvo Slovenije 0 0 0